KD-S735R
1-30
4.10 UPD178078GF-558 (IC701) : System CPU
• Pin layout
• Pin function
80 ~ 51
1 ~ 30
50
~
31
81
~
100
Pin No.
Symbol
I/O
FUNCTION
1
NC
-
No connection
2
BUSINT
I
JVC bus communication line
3
BUSSI
I
JVC bus communication line
4
BUSSO
O
JVC bus communication line
5
BUSSCK
O
JVC bus communication line
6,7
NC
-
No connection
8
I2CDAI
I
Serial data input
9
I2CDAO
O
Serial data output
10
I2CCLK
O
Serial clock output
11
NC
-
No connection
12
LCDDA
O
LCD driver serial data output
13
LCDSCK
O
LCD driver serial clock output
14
BUSI/O
O
JVC bus output select
15
NC
-
No connection
16
LCDCE
O
LCD driver communication line
17
SW2
I
CD mech switch
18
SW3
I
CD mech switch
19
SW4
I
CD mech switch
20
RESTSW
I
Traverse mech rest switch
21
ENC1
I
Encoder 1 input
22
ENC2
I
Encoder 2 input
23
KEY0
I
Key input
24
KEY1
I
Key input
25
KEY2
I
Key input
Signal level meter input
Signal quality input
Non connection
Connect to GND
Connect to GND with capacitor
35
REGOSC
-
Connect to GND with capacitor
36
X2
-
System clock
37
X1
I
System clock
38
GND0
-
Connect to GND
39
SD/ST
I
Station detector & Stereo indicator
40
GND2
-
Connect to GND
41
NC
-
No connection
42
IFC
I
IF count input
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9
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8
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4
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8
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9
9
2
8
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4
2
9
8
0
5
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5
1
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6
7
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